When it comes to giving back, these stars are on top of their game. From talk show hosts to rappers to business moguls, the following A-listers have dedicated their time and money supporting undeserved communities, assisting Flint amid their tragic water crisis and met the call when disaster struck New Orleans and Thailand, making them some of Hollywood’s most generous. For a list of the 10 celebrity humanitarians who have exceeded expectations, hit the flip.